"Amino day's balance combination of crystal-line free form amino acids provides a very efficient way to obtain quality protein nutrition during dieting. One gram (one tablet) of these highly assimilable amino acids may be equivalent to what your body can derive from up to 15 grams of protein from food. Plus, crystaline amino acids are fat free and very low in calories. Amino day contains 8 essential amino acids, as well as 12 others, all of which have vital functions in the body. Such functions include building muscle tissue, providing fuel and acting as precursors to natural biochemicals in the body that play a role in keeping the body's metabolism at an appropriate rate."